{
  "manageEntity": {
    "action": "Save",
    "entityId": "930163162",
    "entityType": "Track",
    "nonce": "0x90e5d3035fedfd2c8115caf94fc838a5e61b37422e49a421b89a8ec2329b54e9",
    "signature": "0xb0f42b3a8f092ac2e1d04f2084dab0a11b969e4ac6d5b5006ff0884f336c34ff3891d3149dd690be796f201b4f8f3864214f04cd30902ee36b97ad98b5c2db421b",
    "signer": "0x248684AB6cBbC4EA81a5A157904D29140656A6d3",
    "userId": "265134428"
  }
}