{
  "manageEntity": {
    "action": "Save",
    "entityId": "1053233491",
    "entityType": "Track",
    "nonce": "0x6bb9a0eb84e581045e5b1101d0f7ba3c5f7d055c081ca7cfa68be5d7652881ea",
    "signature": "0x97883482115a88f657ecfd7fbbf931f7eb51d1fd00595b0feb114aba37222f343e270f8d4fd698b7e9b08db01b9bfd04f840c27f9ca0d97716db1a65c273ac5f1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}