{
  "manageEntity": {
    "action": "Save",
    "entityId": "76289917",
    "entityType": "Track",
    "nonce": "0xc3bbb3084e6dc14b06d2c3f9cdb34ec2af2c76f05073ffb95466c7139763e920",
    "signature": "0xedda0619a2cb249dcabb404f292f14b452300278c6927422b932c144f14b587749b4cda5fa0ac19d265223a41f3e2ab9fd52d691099a7d698241cc2db1a46dea1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}