{
  "manageEntity": {
    "action": "Update",
    "entityId": "349615440",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7320bae09c66e3797c1200bf67a35b246b4fe46258b06369e079cc3e6a2cf7f9",
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    "signer": "0xc7328970a3a0E3454728a9f8D6F14ad16F2AA672",
    "userId": "349615440"
  }
}