{
  "manageEntity": {
    "action": "Update",
    "entityId": "726314312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawkrspkv7uwprmokhgy3kwrurc64jllsqllz3edje665w4ngnx53q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1607942474}]}}}",
    "nonce": "0x2d4803f761206af6fef1dce958eb33849e6b86dc6eebb36a2b83922ec82b6d10",
    "signature": "0xc9157d964aa29ecaa5ed0f1603557be47401436952e48bd309a6b9cdf0f5719935ff8afc73083621dde8c1c3f6f3a1cbce613fd355bed9e856103cd9b0b112621c",
    "signer": "0x10cB9Ce4F77e218CD9Aa08f7571669CEAE89842F",
    "userId": "726314312"
  }
}