{
  "manageEntity": {
    "action": "Save",
    "entityId": "582649123",
    "entityType": "Track",
    "nonce": "0xa9e06b813f175b85727fe8cdec841985676bbea3f8bace4995b263a2d408b3e2",
    "signature": "0x4a4c826aea7f0a3b2f127998219b1998b2092344a1ffeceb517910b428f56d632da8e57c81e482c0549320995e6587e61d47a3e4e09c32b8960bc0d6528d67001b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}