{
  "manageEntity": {
    "action": "Update",
    "entityId": "315268152",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa23aa02f0b50d260629f44818acc73ff0fed6e1d91db600c9bb41f4fbf97133c",
    "signature": "0x2e8ee4ea5043e0489284e50ac77cc721379013cf1604a6550e008376589792ac5742e33f373d37d6869c9f851e18c3db40eb20ea83a135ed944ab7261ef7f46a1b",
    "signer": "0x1523dBDd49A653271BD1F378eF3fc77B20b4f2C1",
    "userId": "315268152"
  }
}