{
  "manageEntity": {
    "action": "Save",
    "entityId": "1545033104",
    "entityType": "Track",
    "nonce": "0x8e9ca6696cecb2955747fb9d1eaede01ddc90f26b325d08a4211a2db13561d6f",
    "signature": "0xf2f494a99be2aba10e63a417b16ff1f730e8f429dd9f589742d577a9f970bc4254b6d824b612b801349c38b69589ee81ceb0afca8a8428d668d44ca1756bd6011c",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}