{
  "manageEntity": {
    "action": "Save",
    "entityId": "1334485633",
    "entityType": "Track",
    "nonce": "0x31f0be7d2536d52022ba4bf38e1dd15efcc891ef23e3baf24b5d6525c76db536",
    "signature": "0xb158ff171df2935ae29368f05a6b353e03516bf5a79c3d3ec6cbff302cce3eac630d7a26f4688c84c8c50605544f05bc37bf5192f6a056ebc7eba2cfee11bcf21b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}