{
  "manageEntity": {
    "action": "Update",
    "entityId": "976064286",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1caca65ccdb7ce143c9d0eef9fcc889e0e3ec3c491de801f8e967127113dd970",
    "signature": "0xbf2c9d1070a4d9077b336144ada6a6c46d71181635a4f398849d73914e3aba8513003e075ac156ebd61df914ed6506dd2e606289897ef4b8f553ca06fa26d99d1c",
    "signer": "0x1d991729C718c346b427EDceF5a80412C4188C56",
    "userId": "976064286"
  }
}