{
  "manageEntity": {
    "action": "Update",
    "entityId": "223852376",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x854cd90a0b111bbc15011539327298531dee2852dbdb9a44c2f575a01f0938e6",
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    "signer": "0xD55D966a5B1D2ae3c7E642B79A648625202B91B8",
    "userId": "223852376"
  }
}