{
  "manageEntity": {
    "action": "Update",
    "entityId": "670354464",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8275972dcf6fdcd1f7f9242c46f8c90f06f6d52c4d4afaca0df4a67526df8c96",
    "signature": "0xfc2ed5397a7510da56c37be57db7ea63ac0d63829da0ee6bd166bf22f46833c712e255966b3b1b74364d1aba02fcde1947c361d4bf720533f243e1a2bc286ebc1b",
    "signer": "0x20C29a756e588fC89a1A5cfe6E8506681c6Db30a",
    "userId": "670354464"
  }
}