{
  "manageEntity": {
    "action": "Update",
    "entityId": "405518361",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf56af91566c749068d3f0affe05a36c1dd55d84492b4ff37a4f9107e9fb5571f",
    "signature": "0x0f877f1850f1cbfc8b1db72744d7334911f6899ccf83faef9c5090af1c235d3f42ee15c84f2664fae76ca976b01e3781c3beb1843d1bd053d4fd21caab7cfc391c",
    "signer": "0x9Df3B620Ace778C8855C5a5C91CCa48A9b483056",
    "userId": "405518361"
  }
}