{
  "manageEntity": {
    "action": "Update",
    "entityId": "646334999",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe8c8925997ca10578875bde7b13f44d290b37337c5f15b661eef23284c2a3c37",
    "signature": "0x9092d93a3e919dae334e5e7e1eed288acea3f1d3dc9707f3128cda0280da97f673eb461b7e22abe237ce644a3af63595de3df10e290cc44aed1a86f1e57b05491c",
    "signer": "0xECAef4F902886d44A09df4c4ccC76Dd2a739a603",
    "userId": "646334999"
  }
}