{
  "manageEntity": {
    "action": "Update",
    "entityId": "848751401",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6cddf3fe6b72a63592dc4db3c1bef7ef4e465126fe466d3922bd7094c970ee50",
    "signature": "0x363d28c812602904b4e9c9791399c3ad79aded30fa4fe82c0ae68ca451f720ec5a8be061748e891c2942d8dd421b487bbb6bc092f8bba6b277bd13599d7a622f1c",
    "signer": "0x4D2D17E9078a257050f14FdD4730a37e4Ee3C62B",
    "userId": "848751401"
  }
}