{
  "manageEntity": {
    "action": "Save",
    "entityId": "106051",
    "entityType": "Track",
    "nonce": "0x01cbc2318bbe7efd8af85a0c5bf5051789fdd8e82fbfd8f0f63e80957fe8b0d1",
    "signature": "0x815fe828853cd6d5f814a56e39606dcd9741bbed62d624342a9831f43a7ed3e7466dd437fb7f80a1d0d3626886ea96188a46b9e0ed6f5c6bb437b923835cc5781c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}