{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x49e2d6d457016de592814879919926c26e08fee83e56fb7b1a0588c50548d016",
    "signature": "0xc89e62c9a635ce4e79c16dc0c7124a9886bfad84ab611ae3f36cdf63a30fee5b2ec3af9c1ac596781238b0fa305e287034a7a07d19c955a984de85fe47ae78791b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}