{
  "manageEntity": {
    "action": "Update",
    "entityId": "712229975",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb8d43395c7a6398072a0e4cc2377cf3bed2aec6ad9ab3f0d045ffe5aeba16689",
    "signature": "0xea07f68b964ed90b5a26b84bf1c5a7dae56679517f288efb96076abcac4d1eee12b7692f32e44e2db3e885e15f819b98137e11eb6656bc9355fdc3829665c6901b",
    "signer": "0xb72e8a3DA14D2C1755c1F80FFdC075DB6260c697",
    "userId": "712229975"
  }
}