{
  "manageEntity": {
    "action": "Save",
    "entityId": "1427178190",
    "entityType": "Track",
    "nonce": "0x61b92004f675ce798f395be1d679e57e039d8daa85a760d2084756e202d63a83",
    "signature": "0x6e66a348068765df373438c3ccebaff17d2633813c6e7dbfb1c95d8479c45a372fb2f463875eb5fbaeb2feb77679c1203554070186f2604f43ca792499373f101c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}