{
  "manageEntity": {
    "action": "Update",
    "entityId": "891043539",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x22f83fa62cdbf09d472deacb1444fa7988ea9ccf7aa1b78011659b4052419489",
    "signature": "0x6e93560b2e75fafbba5338619303a8383d2ffb35c45661a6b0e288f49453be3078b1f21b6cf9992ce77fd1fad1a46c910bcca484e829efe4b491b43e5955d5161c",
    "signer": "0x02D488F979a6DD1B8b401E3403B6af7aA52BfC60",
    "userId": "891043539"
  }
}