{
  "manageEntity": {
    "action": "Save",
    "entityId": "1792749884",
    "entityType": "Track",
    "nonce": "0x97d7297d92970e0cfecc20115de36cbc13a1e4f4e768b7ffa20389a0c5f1ad0c",
    "signature": "0xb1cd4145baa67b5269ce7c4fe0c9ebf9a10123c73061df92173f2b70e130a7c5340b010dd309fde646b9692a1c4574977f1ef3d0d98be7dbee52d165d11542db1c",
    "signer": "0xa5cf2A0b67A9F8aE59B937369F6404d7Fe103c07",
    "userId": "641892598"
  }
}