{
  "manageEntity": {
    "action": "Update",
    "entityId": "776700119",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11651242476581a7eba21a58bca450cdc6c566a5e506c2de8f605953812b412c",
    "signature": "0x3d450e3780b0350b2912d18fac93ef388d4ab4b7d5bd310499fd3ec45c9bf1e965563789c11c592e0a346e6c75e001e00d71bbf52fe8504f5ac215fb908c32af1c",
    "signer": "0x75ba1742Db9E72fC29110d15e351Fb811E9a1C92",
    "userId": "776700119"
  }
}