{
  "manageEntity": {
    "action": "Update",
    "entityId": "88412221",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa5536e3d2f97512f39b44698d8abd92eef3e76235d65cd8e2cc3f37441219e03",
    "signature": "0x286f621e33bf3a67e65368b8105d35723812d5b37ff4eb17d1e2b520a8420673351c5e6fcb0438abac0efa8cdee46781676c6a4ba5e699fc5dbd44331022c1531b",
    "signer": "0x8D14071Cd3fF310822709162701CEE2bB0dF6569",
    "userId": "88412221"
  }
}