{
  "manageEntity": {
    "action": "Update",
    "entityId": "505088404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4ebb852a110fde7005dd589c125c2487b1f53e0a7911ad5165faa4f197d1e4cc",
    "signature": "0xd28a27a99cb9f7690b4e3713404835a70e4a513be7c9e1c0e1addea45f60596163a48885ba338791459e23330dc5fc19f3b757701d2b72f86329d887d149dbdd1c",
    "signer": "0x584E14C286Fbe3d7d725fEDb4a87e9336366de1B",
    "userId": "505088404"
  }
}