{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39b7809eb08f03606be55b6660434830c6fadeb2255afaafa242f3a81f3f14e8",
    "signature": "0x138ce7391332a866237251c48313a5939ef3a1ee0af89a1c7b8eba45cf2e7c023685ae67d072f13d4cd6140cd8602e6b360a334e5edf873ee9aca35459660f2f1b",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}