{
  "manageEntity": {
    "action": "Save",
    "entityId": "2046857711",
    "entityType": "Track",
    "nonce": "0xbec55ba99cd1e8ecc47d2136b822c1e06d3d9aa3bf8284b2fdb60965b72bebd2",
    "signature": "0x47b47be494f5746cbc2be7c7a6bc83e1c248914170ed2bae7968e8121336b64e62e61338e749a58feb6bcc90e0e47788e216fc20d3cbbdb2d28a6a80e67164311b",
    "signer": "0xB755CddA6da08Cbad290b9528CD0dC860f9f7dd5",
    "userId": "536791428"
  }
}