{
  "manageEntity": {
    "action": "Update",
    "entityId": "394371583",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x629dc9db393fe970881fa6fad56c122c8d9226abf8529080bb1afa4001176aea",
    "signature": "0x11bd35ff9df5ea08b25cd66821ea3cd720a0978d5c5de2655fd955b454469c431d1f9bacd1f5417ee60a322c2042d97958d1ba570a1e2c2a3603e5c50d2833c51c",
    "signer": "0xEa9F45271C810281286B961944208Aa990206f89",
    "userId": "394371583"
  }
}