{
  "manageEntity": {
    "action": "Save",
    "entityId": "1278209086",
    "entityType": "Track",
    "nonce": "0xf47b77ef2c045fdf1e38929a261990c6bbb01f77e105242cf9e8f0c0f9e87c0d",
    "signature": "0x5949647f6b4b90d3a3f953f53d1921fd17eb5a9e2f61dd46dfc7c094692993bf1bb0b82e2cd5fc07081f96469f49b624201377ca9662c78545a74988d21bf53a1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}