{
  "manageEntity": {
    "action": "Save",
    "entityId": "942307967",
    "entityType": "Track",
    "nonce": "0xb63781b59a7eaac6fac236dfa7e694f2b1d63a2dd20d85039967803946ffad98",
    "signature": "0x60c89f36c09a6f1f49b622dd4d6e2cb67f638dd99f4c05f179776b5699caa69900811a00fb3d5490c2144ae6d035551be50b61ab7aba1979777fc0803fca59f71c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}