{
  "manageEntity": {
    "action": "Save",
    "entityId": "85091681",
    "entityType": "Track",
    "nonce": "0x4ec4f1c06e6790a3624d3fbcf172460ec70f30fd8faf7138ca2c56432dc35b27",
    "signature": "0x01e57d28a1f0a1d40700fb0a1b4105ca622933040f2a67015d08edb7ce442ffe0b69aecea6f138280000d7b1d07855029b1c13976f774b9c1229f46dbbb4225b1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}