{
  "manageEntity": {
    "action": "Save",
    "entityId": "165109",
    "entityType": "Track",
    "nonce": "0xe9e34ea097bd8a7490dec0ce7fec25741b8fa33815ce7736afc3cc4ae85960b1",
    "signature": "0x1029e23cc9d4b1b7c9446fc9013f2b58a6ba2511e1b5e7d2de38044dfb742add4e728a7aa5c947eb3825d821d744d42b61108bd132eb6f2b4ce8a729b016ea9f1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}