{
  "manageEntity": {
    "action": "Update",
    "entityId": "384660404",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcbb23327876ecb3436d7cf066312c8def36485710c0e0d72f589caf94be11343",
    "signature": "0x7aa8ab7c896c19ade8ef245b05e46724eaebd2a2b8dcaa7cdff7881d026f5e41438f4278bd5ebecb3987877e71169b485d50df8d543aa4426597052e7df0272c1c",
    "signer": "0xf37F6178717ED9b17529F23490Aed662B5391cD3",
    "userId": "384660404"
  }
}