Curl - Encode file as url query - json

Question

Curl - Encode file as url query
I'm trying to send message to Amazon SQS queue with payload read from file using curl
So far I've got working curl to send message to queue but with harcoded value like:
curl --request POST \
--url 'http://localhost:9324/queue/price-import?Action=SendMessage&MessageBody=%7B%0A%09%22id%22%3A%20%22f23399af-a384-4ed3-bac0-386a01804d83%22%2C%0A%09%22de%22%3A%20%7B%0A%09%09%22price%22%3A%2010.59%0A%09%7D%2C%0A%09%22nl%22%3A%20%7B%0A%09%09%22price%22%3A%20107.99%0A%09%7D%2C%0A%09%22pl%22%3A%20%7B%0A%09%09%22price%22%3A%2012.15%0A%09%7D%0A%7D'
And payload I send is:
{
"id": "f23399af-a384-4ed3-bac0-386a01804d83",
"de": {
"price": 10.59
},
"nl": {
"price": 107.99
},
"pl": {
"price": 12.15
}
}
How can I modify this curl to omit harcoded value and instead put path to file with .json extension?
Desired output
curl --request POST \
--data-urlencode http://localhost:9324/queue/price-import?Action=SendMessage&MessageBody=#input.json
What I already tried
curl --request POST -data-urlencode http://localhost:9324/queue/price-import?Action=SendMessage&MessageBody=#input.json
curl --request POST -data-urlencode input.json http://localhost:9324/queue/price-import
curl --request POST -data-urlencode "sendbody#input.json" http://localhost:9324/queue/price-import
curl --request POST --data-urlencode SendBody#input.json --url http://localhost:9324/queue/price-import?Action=SendMessage
Resources I found
Unix cURL POST to specific variable using contents from a file
POSTing a file's contents with CURL
curl.1 the man page

Answer 1

Answering to my own question based on this answer:
How to urlencode data for curl command?
This worked for me:
curl \
--data-urlencode MessageBody#input.json \
--data-urlencode "Action=SendMessage" \
http://localhost:9324/queue/price-import
and my input.json file:
{
"id": "f23399af-a384-4ed3-bac0-386a01804d83",
"de": {
"price": 10.59
},
"nl": {
"price": 107.99
},
"pl": {
"price": 12.15
}
}