{
  "manageEntity": {
    "action": "Update",
    "entityId": "723021935",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x99cf2def568edeece126a6b9ec9458f91e92c2438f6e54dbd2e0f7f10696799c",
    "signature": "0x2de083bed6292d1b26e2496c2eb78b3e81a5cb1fa3fb1da01c0d3cf11648b69a36983cff646f751c49c01529983662bc752b1bd99ce6d4cce4fe84c05fd5d96e1b",
    "signer": "0x1f779885d92f15264D7f4EaF616Ac1F3c791b4f0",
    "userId": "723021935"
  }
}