{
  "manageEntity": {
    "action": "Save",
    "entityId": "2084768057",
    "entityType": "Track",
    "nonce": "0x9b1d2c95342c25eb543752f948af3d9397a32fa2d246c64bdbd84a6162f82f46",
    "signature": "0x8c9496be8a79b973e20b515e9f088959340195fa20a0bc00d06911f292f4d70364da6f16334e3a42d330e425c47d9e8d8783dc702e60114fbc783b81f7dd9ca71c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}