{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132405260",
    "entityType": "Track",
    "nonce": "0x56e4cc3a4f3ef649c1832fa8a66a62e18f49be5047e44d0558b488cd045457b2",
    "signature": "0x67f299a8ad30430bdc7fc82861c1a1c4ce5ad7d0bc9320c3d95a57e8ee44721f2c9a685341e35df37e8a7bb96002f4dff6ba87c5fbff8bc2f0c4f21e3da1b2de1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}