{
  "manageEntity": {
    "action": "Update",
    "entityId": "937198665",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8b963b967a06c859be5904991ba706710b52b5a46d25e5ef4ead3efcd9c959ab",
    "signature": "0x61e3b7e6af24d63576c0d69725d091b361c57c06797b7ee00d14c73a7bf0c4407eddfcaae5f0f07d2f57724f4eaa225be15261e6f285f4d5a9bec0575aaeaf021c",
    "signer": "0x7153827aB581A5a4289E37ff776a53d3E839Bff0",
    "userId": "937198665"
  }
}