{
  "manageEntity": {
    "action": "Update",
    "entityId": "158756861",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda88c982e9967bf1a6b7c7a81b88d8a8d19cdd8b166ba188612a6f82cd5cb681",
    "signature": "0xacd684e86428137f945847320e7461b96a17e3791afa5b57b096c09a157d5f003a59dec6dfd962f5cae16c3a6459d25f79742c87ed8db00befee0cd2f5f4c82a1c",
    "signer": "0x37aa003D06B605532fc5fe8aDa0D7D118889f5Aa",
    "userId": "158756861"
  }
}