{
  "manageEntity": {
    "action": "Update",
    "entityId": "299656687",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x86233064373a8c1c2f7f691c8d724d40065986a2aac4cfdda913878a0b361205",
    "signature": "0xd1339263cac59e0146cd7841188990287a9bf10f13c453395bd8c408a85c725e51dead29ea7f86f69f350aad34a990da859be9b0914201e308ac227e7af856e21b",
    "signer": "0x00F1c861ECF5c859DA1489Bc228F0B9Cb5DbB012",
    "userId": "299656687"
  }
}