{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xab2958662e31cada45d59fa951350a3ae2a4ddb8b494f0f82cc64802a10e09fa",
    "signature": "0x5497ad9a9aece970aa87508f17d7ded43ed9cdb6cbcb7f35ac44c82add1e378d017783e722da305e372b512a823de4171bd275bc3b7cb12541b323337e6198aa1c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}