{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056127240",
    "entityType": "Track",
    "nonce": "0x38c45a2fb85ed276f7a8de6bc45b5e667b8c4e7dffe3378196d08559396a6400",
    "signature": "0x772685877dc3a2d3bfed9521b90d95045a71e3f6d08c778b6042233d41236ccd47f5d7fc5cac9268e95756ac97cea7973425a3d15430c0f847fd55900e562d911b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}