{
  "manageEntity": {
    "action": "Save",
    "entityId": "1281914755",
    "entityType": "Track",
    "nonce": "0x3a44fc52ca2db04dd14864c9e3333d9cec32efa0963d94f3359fa55d9ed97141",
    "signature": "0x81fce177e6578038d7ff7f8dc0f10a832f8e51a85d2a8568525ef2c8708240bb5dceaf43766044d3cab006c43bbf83b940bef7d3cca31b68c70611084da1b4dd1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}