{
  "manageEntity": {
    "action": "Update",
    "entityId": "974456712",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x205b8c51ef6e5b2f97e6a0d9d041cc49bd0b4319b9f1a5b68364af21f694afd3",
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    "signer": "0x7e165b88E11B7c713F3E0aa26623b35E9f032872",
    "userId": "974456712"
  }
}