{
  "manageEntity": {
    "action": "Update",
    "entityId": "850956187",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7fc327a7fafb7f10cb94bb930a94556805f15478e2831855d6ac57bd75c6d97c",
    "signature": "0x1b66400390fb82938ddea4cb1f176edd057e5b4e0c205c0f3dd7f9d466e9b7a06728acf5b6cec916ba6dd0460da8a709e0d151acfa207ac69300efd2ad2ef5da1c",
    "signer": "0x78d41F673077E9B3Fed7bDccB987ae15D22beDFE",
    "userId": "850956187"
  }
}