{
  "manageEntity": {
    "action": "Save",
    "entityId": "200267546",
    "entityType": "Track",
    "nonce": "0x94291ba86abb51f40e670616378104234332b5fd72e3611f1867ec546195331d",
    "signature": "0x4da2b353ca7f126823f47ee2e95fb6e57fab97071582f51c397a8f6f31915cdf7108c188d80c1fc1e6fc0120037c886afe2c6118e3b248ed306d035232f2b50c1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}