{
  "manageEntity": {
    "action": "Save",
    "entityId": "1844699306",
    "entityType": "Track",
    "nonce": "0x4e69c278a617c78c2df054524d544c07ebdc1d4a6e97ed415714b418b1d39ca5",
    "signature": "0xfaf8eb95132ec9e9102b58bf3c4da75579404ebacd461cb74cb3c772b06692606faa8f90bbed9616559ac8d97a00577cad7d5453d64e06cf5ab5a47cf79e4f7f1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}