{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf8937921488d08509949997e50230af32e6d2eaea18da2d1bfc9d2804a1e3a61",
    "signature": "0x4d76d8c0eb7bb41eb9ae3941e1ad1b38ef7617090949056695e3e6819a58ae914164f19cd4ab326aafae71ebc668f307c93efb8d0e01198e0dbe5ed2a7a5becf1b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}