{
  "manageEntity": {
    "action": "Save",
    "entityId": "933712532",
    "entityType": "Track",
    "nonce": "0x389634a46878a72efe11a4be638248ca433d7b07a44963364e9c0e93e5fdcf4d",
    "signature": "0x916b2f2e913f42f79c6b6c47f1b3ce67f30fef0ab89ba8b01b098f62a35f377d0ccf56266b362a91f61d104b701d1e39994aaaa96a9a555a4ab0aca66eec4ac71b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}