{
  "manageEntity": {
    "action": "Save",
    "entityId": "2112101342",
    "entityType": "Track",
    "nonce": "0xe6572eaf75ae11629a9596246bfb3d408bcd5cd06dc989c08ae9b4e171c21b71",
    "signature": "0xd7bf45f7962ea84a47d10a1e890319c875b2e605fc37f959eea3c18cdac6acaa7c7defa0345582aaa6664c6c06e0ede7b8c1de9af7f1ccf5c4dded2fdce8f4cb1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}