{
  "manageEntity": {
    "action": "Save",
    "entityId": "586041",
    "entityType": "Track",
    "nonce": "0xe8821d8d865ad5b7865c845c2a2e1d62d302fa7fc6dbe39d598491a0f027e536",
    "signature": "0x4252887c8ef20a19536c40242c09b0343b4bd61c84ea6a47d0aed37f229c2dd53da32abba1e329842aa6a3ca11c6354b0920897b64f611d31479821ce156f0b21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}