{
  "manageEntity": {
    "action": "Save",
    "entityId": "584485396",
    "entityType": "Track",
    "nonce": "0xbc2101d4f71e01d2ffb9e72157ab974b78027d46de5c86b455c4c992bc387a51",
    "signature": "0xb55a1f3651663a78fe09bf248ad4264a862b8cb36d9cfd5f3efe0d0c3f7c6236716dc45e4b7ad7a9f6034afc2a02f06855fa8db9e1df4904850890f4f570f1dc1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}