{
  "manageEntity": {
    "action": "Save",
    "entityId": "1031118817",
    "entityType": "Track",
    "nonce": "0xe1b8096e34443d5af31bc84b0f07bf4b95c66e2ed50a6f4debe9b68bc9a92a64",
    "signature": "0x5a0bd262e22225bbcc8faf562869155520cfb130bf7efd285b9b9397c7f25a31352aecab22bce8bc26b645f8bb1804a18fc13a5efe35ad79ec528fb71b8b30601b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}