{
  "manageEntity": {
    "action": "Update",
    "entityId": "991822518",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa33cebe42c10262b64f2d19dfc20e8d9b68e504e8c4238e81d57d42ae7d6a761",
    "signature": "0x01327284eef6a9120a67fe41754fd264498c8c3eb16a234c0f541d9626c9b67f77723bc573047cc97f6c5510a3215636dd469a2c38f06202c06b743643640ae31b",
    "signer": "0x561246FD13383982AD9e3a97F8D3bec81f63769d",
    "userId": "991822518"
  }
}