curl error

curl error

Mi cURL code is like:

  1.     -d '{
  2.     "customer_id": "447757000000xxxxxx",
  3.     }
  4.     ],
  5.     "plan": {
  6.         "plan_code": "aquames"
  7.     },
  8.     "addons": [
  9.         {
  10.             "addon_code": "SoloFlic",
  11.         }
  12.     ],

But I get the following response: 
  1. {"code":4,"message":"Invalid value passed for plan"}

The plan_code is right. I checked it 10 times.  What I may be doing wrong?