{
  "manageEntity": {
    "action": "Update",
    "entityId": "881446128",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x438bb1c961cb9a89155b446cf50d729de52c488d40a9f87e2b33a027cee17751",
    "signature": "0x3e9e09eea68f9f3ca52857a808bc293c6b3286969746f4b0b1ec5477f4a9dab165f6715a4953f52b2b7ab41d54bedd07658f229cea08f145bfa18ebb33f105911c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}