{
  "manageEntity": {
    "action": "Update",
    "entityId": "281557683",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x138f03cee99784e9f9a7eeff0a660dc26c7f226ef075b34c04ca938ef67cd361",
    "signature": "0x3544712862c4ea1385a669edcd21f4b81c0ed2041a372f16378b9ecab6f78733728781ce75b4a353902e9eae8a3c5dc9ff8eb39d89979f83af5e55799da7e51d1b",
    "signer": "0x9851B67361957bfC1a2dC46Aaa1F49cA68Ee4f75",
    "userId": "281557683"
  }
}