{
  "manageEntity": {
    "action": "Update",
    "entityId": "908487411",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3b662535be8e3ea6595942ede70cc09e8496a3c3ec6e0dc7f277b690ab360223",
    "signature": "0x0a632696d86498b74929432b8ed9733467520d654b77e962ee909b65bc33026d2c59a94ae7d7e832ed7c802914179ae84e1b03f758b001858725301b65df3d981b",
    "signer": "0xfeBEE04516164483CF01D007eB79f7c798FE6244",
    "userId": "908487411"
  }
}