{
  "manageEntity": {
    "action": "Save",
    "entityId": "1097783095",
    "entityType": "Track",
    "nonce": "0x66c3167908dd634c858364923bb1ee4d49ed2e8a13660b2e7fbb47c644969930",
    "signature": "0xdf7f1218b8075194a08266c8274c8b8e29ffb282234508600bf1b8898a88f0e476baa8d6bf59b9411e29ecf35c1d03c14f2f6bdf8a2dff772d08a47cb2fb490d1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}