{
  "manageEntity": {
    "action": "Update",
    "entityId": "528270205",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7d1e9fbde1828d47d1b4118854cedbfc4540e3317e22b21668cf06301f5536a0",
    "signature": "0x2ff6f184176ad3b70dac81eb95b4de7994e839b733b52e3d999e30aff18c19717475f81cb42f43f0f0eabc81ec3885666031ee239559bc44d124b3d4805135051b",
    "signer": "0x6A409f4D8af22d7ecd049e1F789B2b7A2A090889",
    "userId": "528270205"
  }
}