{
  "manageEntity": {
    "action": "Update",
    "entityId": "357568342",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x107397a3e3c9ce8a5b0e48636aafcc73aff60bff2fb924be817964e219edaf45",
    "signature": "0x5644d70be9cfbd171fb1d40645f4f5f3ad68d3f78c093b3c176da01bb954e57b0979db051351c3d0810e341a151aaba9486ecb267849a4dc4342e973f9292cd61b",
    "signer": "0x7Cd25769399a3c0928125396a2Bc231a2Ef98f8e",
    "userId": "357568342"
  }
}