{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052920297",
    "entityType": "Track",
    "nonce": "0x86cc347c68ba6a8f1b6ec31a53583c82257aa981f7ece193b2c737d3c6bd7057",
    "signature": "0xca6dde87f442a54d9a739e127701c24f385b5491affcc9bb2f07afbc7b8e08d018885d4e16398eb83e1f434dfdb90befc78613d6fe984b308a183d194fa64fec1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}