{
  "manageEntity": {
    "action": "Save",
    "entityId": "2083747189",
    "entityType": "Track",
    "nonce": "0xcabdc4b2bb46c0c52c8615fc405b0e2fdaa505645269f45229eb810b6a917264",
    "signature": "0x82321260c3f7125ae46e4f553afd441ebe24a0ede30a9bcf7f2c3af3ecbf6a2628507f46556c9b69b2a18de936e853d60de2552b981389e3210af8ef2419fbeb1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}