{
  "manageEntity": {
    "action": "Update",
    "entityId": "553530691",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2f972f92dc5317a3cb3cc8a1ef257c4cff0f89eb7b9757febb7bf8966902bcc1",
    "signature": "0xb6adfd5c1c056a243106fbea12d09eac4fc22471b160ff7f5b421a27622f38a83339ba23ae44b09e0ffa65f0777f9099a025b741a3ee6399a21fcf8e3cf6796b1c",
    "signer": "0x2617Bb662623b191189985d981437C0c0E3830f4",
    "userId": "553530691"
  }
}