{
  "manageEntity": {
    "action": "Update",
    "entityId": "999867460",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0649166411cc38e81998bfe9dd9014a281c14dfc86a7deadb362f5fde592a275",
    "signature": "0x4a56ccaeb0e48efe12384696139a324d6e5216ba2e658a5926f78dd101f853bc4ef7d85674de72850cc863d7f7af3686b4b2ea0cfe6212fd881450191c8a22451b",
    "signer": "0xB3bA3F88Cb7244F18E924c2C2E6c2F4cB1F38888",
    "userId": "999867460"
  }
}