{
  "manageEntity": {
    "action": "Save",
    "entityId": "97208226",
    "entityType": "Track",
    "nonce": "0x1bc4e160ae6fd7f58d7844047a4762fec93e6ce6f235ac71951b3b9aa977de94",
    "signature": "0x6c75a86dea102b92b2211b3ff7f0568f19a4aae178972d88d0e9b9f8fa9eedb72b384d1e31a1f7e28b3df391b58d4ccebeb7bc585b5ae4c46338d5bc6d57ebc81c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}