{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x727ced0a7a366ccaa42b3c348726d384bbfedee833666ad1606ae4c5633f4ab0",
    "signature": "0x135de26ed8159a4a021a321d1e213003fd9453eab6640ba147593de17947805536637801359b0a81dde5e57f51096be686a620c0f04d917eb97566bb9ca167ca1c",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}