{
  "manageEntity": {
    "action": "Save",
    "entityId": "126690",
    "entityType": "Track",
    "nonce": "0x2d5c89fecad0110ad6acfd84c14d2367fc652e14add0d81a9cd83cbf8c133d03",
    "signature": "0x73b86198f445b5f1ba4b17a63f7d09431e3561f679d4a3dcd67e386c1e0e07fb2a0a4e5162a66930ffebe4bfc8dcd51fe2f21dd1acc24c0b273956ed1d7f96cb1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}