{
  "manageEntity": {
    "action": "Save",
    "entityId": "2022694373",
    "entityType": "Track",
    "nonce": "0x94ce5ab08db4dde9367d64481a969da947826bd0c5a545247d63239498743913",
    "signature": "0xb50d4b9435bd2ca38c14de082ddfb4397b9571a45b047606b60323e17c217cb753457b9216ada73385ec3d550f60559fc9116e557fe71d425315cb378affb30d1c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}