{
  "manageEntity": {
    "action": "Update",
    "entityId": "53147192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x10bb2643a29cd8d7d046dbbb46299e09f9520f6ea9015bf4404126cc5e611a31",
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    "signer": "0xBff23A058921986392a0c331D8860BAa1466d604",
    "userId": "53147192"
  }
}