{
  "manageEntity": {
    "action": "Update",
    "entityId": "299756172",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x966b51d9c1055ec024750eefa9f816c9d74b0d1dc606acc7bf45f7ccf3719bac",
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    "signer": "0xa67A15D7A8198D5424DCe970779969DfD80Db130",
    "userId": "299756172"
  }
}